home > q&a board > algebra thru pre-calculus > topic: algebra structure and method chp. 4.2 mre 8

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posted by  nolan on 10/5/2008 7:50:54 PM  |  status: Live  

Algebra Structure and Method chp. 4.2 MRE 8

Course Textbook Chapter Problem
Algebra Algebra Structure and Method (1st) by Brown 4.2 9P
Question Details:

(n+5)=10
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posted by WuWu on 10/5/2008 7:54:38 PM  |  status: Live
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Response Details:
1. Distribute
 
-4/3n + -20/3 = 10
 
2. Put n's on one side, and numbers on the other
 
-4/3n = 10 + 20/3
 
3. Solve
 
-4/3n = 30/3 + 20/3
 
-4/3n = 50/3
 
4. Multiply by reciprical in order to make each side equal
 
-4/3n  (-3/4) = 50 (-3/4)
 
5. Solve
 
n = -75/ 2 or 37.5
 
(=
 
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posted by Handyman on 10/6/2008 3:51:11 AM  |  status: Live
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Response Details:
First, multiply (-4/3) through the left side of the equation.




Next, rearrange equation leaving the n on the left side and the numbers on the right side.



-change 10 to have a denominator of 3 so you can add the right side of the equation together.

   

Finally, divide both sides of the equation by to solve for n.


resulting in or

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